Governor for turbines.



PATENTED FEB. 25, 1908.

0. w; DAKE. GOVERNOR FOR TURBINBS.

APPLICATION FILED MAR. 22, 1906.

2 SHEETSSHEET l.

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PATEZJTED FEB. 25, G. DAKE; GOVERNOR FOR TEURBINES: APPLICATION rum MAIL 22, 1906.

2 SHEETS-SHEET 2.

WITNESSES.

. tic fl'uid'turbine engines.

. draping, the main casing 1 of the governor is inner ends of the said binding posts projectpanying drawing formingapa rt of this speci- CHARLES W. DAKE, OF GRAND RAPI STEAIii TURBINE COMPANY, OF GRAND MICHIGAN.

S, MIGHIGAX, ASSIGNOR TO THE BAKE-AMERICAN RAPIDS, MICHIGAN, A CORPORATION OF GOVERNOR non rumsmns.

Specification. of Letters Patent.

f Patented Feb. 25, 1908;

Application filedlifarch 22. 1906. Serial No. 307A6l.

To allwhom it may concern: 1 .aBe it'known that 1, CHARLES W. BAKE, a citizen of the. United States, residing at Grand Rapids, Michigan, have invented 'cerptain new and useful Improvements in Governors for-Elastic-Fluid Turbines, of which the following is a specification.

This invention relates to improvements in governing devices for elastic fluid turbine engines, although the same means might'be made use of for governing other types of engines. The same is especially well adapted for the turbine variety. of engines, and I have shown the same only in that relation.

The objects of the inventionare, primarily, to provide a very sensitive governor for elas- Further objects, and objects relating to details of construction, will definitely appear from the detailed description to follow.

I accomplish the objects of my invention by the devices and means described in the following specification.

The invention is clearly defined and pointed out in the claims.

A. structure embodying the features of my invention is clearly illustrated in the accom- Figure l is a view of a turbine engine, a portion of which is broken array, with my improved governor illustrairo in position on the. .cnainshaft thereof. Fig-e 2 is an enlarged detail vertical sectional view through the governor showing also d-. t:-- il of attachelectric binding posts thereon, the wiring not being indicatedin Figs. 2 and 3.

In the drawing, similar numerals of reference refer to similar parts throughout the several views.

Referring to the numbered parts of the secured above thecentral axis of a-turbine engine of the vertical type. This casing is provided with a cap 2 on which are suitable binding posts 3-3 insulated therefrom, the

ing down to different levels within the casing. Each binding post is made up of a central screwthreaded stem 30..which is adjustable up'and down as desired, through a bushing 32, the same being separated from the plate 2 b .a suitable insulating material 8; A was er 31 is on top of the insulation,'aga1nst which the But of the biinding screw readily clamps the wiring. The binding screws, as

before remarked, areof different length and material 5,'. in the upper end of the main engine shaft 4.

The casing 1 is separated by-insulating I material 1 from the main casing -21 of the cas ng of the engine and dynamo, this engine illustrated being provided with the dynamo casing above. The shaft 5.is surrounded by.

a stuffing-box to form a tight joint, a assage 9 is connected to a. small cock 9 for rawing the liquid out of the chamber 6. A heavy iiuid ifiysuch as mercury, is placed within the chamber, and when the engine is at rest,

. stands in the level position indicated therein.

When the parts begin to revolve, however,

the centrifugal force dezpresses the surface at the center, and causes e.same to rise at the periphery, and, as the speed increases, this surface becomes nibre and more-depressed" at the center and fhe mercury rises higher and higher towards the periphery of the receptacle. As it raises up, it would, in the firstinstance, of course, contact with the binding post having the greatest projecting point, and, as the speed increased, it would 7 for receiving steam from pipe 12which is' controlled by a cock 14, the steam passing out at 11. The steam admitted to the chamber is for the purpose of controlling the temperature of the governing fluid, consethen contactwith the next higher, and so on,

quently its density or bulk," this being the most satisfactory meansof keeping; theisame substantially j-unifornn i'The dynamo casing v of this machine is supported on stands 22 Which rest on top of the engine casing 23 which rests on thelower plates and strucf;

tures of the engines 24 and 25.

. such engines.

In the base part 25 of. the engine are located valves 19 and 20 for controlling the nozzle sections of the engine. Wires at 15 15. 15 are connected from the binding-posts 3 of the governor for controlling the same; and a wire 15 connects, the central binding.- post 3 to the main supply valve 20.

A source of supply, as a generator, 17, is connected by acircuit 16 to the casing 1 of the governor and at the opposite side is connected by 'a wire 18, so that when the contact is established between the mercury and the binding-post 3, or is broken between themercury and the binding-post 3, the valves 19 and 20 will be controlled by suitable. electro-magnetic devices located-therein, and I the engine. will therefore be under erfect control. I have shown the specific re 'ations of these parts and have not deemed it necessary to illustrate in detail'the electronaghetic means in the valves themselves, as I have shown such in detail in another con-. current application, A battery might be made use of place of the generator 17 for furnishing the electric currentfor any other source of electrical supply, asthe main dynamo, could be utilized.

On turbines that run at" high speed I am aware that it will be desirable to gear down so as to fun the shaft of my improved gov' ernor at a lower rate "than the usual rate of I desire tostate that the details of this structure can be greatly varied; I haveshown the same ina simple and practical form and have not attempte to illustrate modifications of details of constructions, as I do not deem that necessary.

Having thus described my invention, what I claim as new 'and desire to secure by Letters Patent is:

1. In a governor for turbine engines, of the vertical type, the combination of the main casing 1 secured at the top of the e asing of the turbine and separated therefrom by insulating material 1; a fu'nnehshap'ed receptacle in the upper part of said casing, surrounded by a suitable jacket for receiving and circulating the elastic fluid therethrough and to preserve an even temperature,- a

" funnel-shaped receptacle 5"within the funnel- .from b'ythe insulation 0 mercury within the said chamber and recepshaped chamber, having perforations '33 near its bottom, with a downwardly projecting shaft 5 supported on the vertical shaft 4 of the turbine and suitably insulated there'- tacle, adapted to revolve freely therewith; a top-plate 2 for the casing 1, having a series a liquid such as I different ones of the series of thr0ttl'ing valves, whereby as the .circuit closes on account of increased speed of the turbine, the governor valves will beactuated, co actin'g for the purpose specified.

2. In a governor for turbine engines, the combination of a suitable chamber; a receptacle within the same supported on'a vertical axis; connections to the engine for revolving the said receptacle; a liquid within the receptacle; independent circuits with contact points arranged towards the periphery of thesaid chamber, to contact withthe liquid therein at different heights as the heightvaries at the periphery, owing to the centrifugal force developed by its rotary mo tion and suitable governor valves connected to be controlled by said circuits, for the purpose specified.

'3.- In a governor for. turbine engines, thecombinationof a suitable chamber; a receptacle within the same, supported on a verti v cal axis; connections to "the engine for'revolving the said receptacles; a liquidwithin the samefan electrical circuit with contact points arranged. above the normal level of the said liquid; and a suitable governor valve, with electrical dev1ces forcontrolllllg the same, arranged wlthin the said electrical circuit, co-acting for the purpose specified.

4. Ina governor; the combination of a suitable chamber; a receptacle within the same, supported on a vertical axis; mercury within the same; an electrical circuitwith contact points within the chamber; a gov- -erning valve within the said electrical circuit, the current through the said circuit being controlled by the variations of the level of-the mercury due-to the rotation, co-acting for the purpose specified.

In witness whereof, my hand and seal in nesses; 4

CHARLES W. DAKE. [as] Witnesses FRED L. OHAPPELL, CLARA A. SABIN.

I have hereunto setthe presence of two wit- 

